Improved water-wheel



NA PETERS, PHOTO-LITHOGRAPNER. wAsHrNGTms, l: C.

UNITED STATESA PATENT OFFICE.

JOI-IN TYLER, OF YVEST LEBANON, NEV HAMPSHIRE.

INIPROVED WATER-WHEEL.

Specification forming part of Letters Patent No. 15,309, dated July 8,1856.

To @ZZ whom it may concern:

Be it known that I, JOHN TYLER, of West Lebanon, in the county of.Grafton and State of New Hampshire, have invented sundry new and usefulImprovements in Vater- Wheels; and i do hereby declare that thefollowing is a full and exact ldescription thereof, reference being hadto theaccompanying drawings, making a part of this specification.

Figure l is a vertical section of my improved water-wheel in the line xof Fig. 2, and Fig. 2 is a horizontal section in the line Q/ y of Fig.l.

Similar letters indicate like parts in both figures.

My improved water-wheel is inclosed by a scroll-shaped water-way A, andis constructed in the following manner-to wit, draw a circle bcorresponding with the periphery of the wheel to be constructed. Thenfrom the same center draw an inner circle c of onlyonethird the diameterof the said outer circle. Then place the stationary leg of the compassesupon said outer circle and so adjust the marking-leg of the instrumentthat its point will form a tangent-iai curve to the inner circle c,which curve, when extended to.

the outer circle b, will give the required shape of the convex surfaceof each of the buckets d and the relative position that each bucket-should hold to the periphery andv center of the wheel. The upper edgesof the buckets CZ d are castin one piece with the head e, whose undersurface curves upward and outward from the aperture in its center to itsperiphery in lines whose radius corresponds with that of the peripheryof said head. The lower edges of the series of buckets cl d areconnected to each other by means of a rim f, whose inner edge is of thescallop shape represented in the accompanying drawings. The said rim fextends inward in contact with the convex surface of each bucket adistance equal to about three-sevenths of the length of said surface,and from that point curves outward and downward to a narrow connectionbetween said rim and the outer extremity of the concave surface of thenext bucket in succession. The object of giving the aforesaid shape tothe rim f is to conduct the water in a solid body-froin the water-way Aagainst the central portion of the convex surface of each bucket,andthen, as soon as it has performed its propelling function, allowing itfreely to fall out of the wheel and not react upon the concave surfacesof the buckets. The object of giving the aforesaid curving or dish shapeto the head of the wheel is to enable the water as it enters the wheelto exert an upwardly-lifting action upon it, also to cause the water tobe kept in a compact mass and to pass so rapidly and so cleanly throughthe wheel that there can be no loss from the reaction of sluggish waterbetween the buckets. The lifting action of the water as it enters theAwheel will cause it. to run more lightly and consequently with a muchless amount of friction.

iVhat I claim asl my invention, and desire to secure by Letters Patent,is-

1. Giving the head c of my improved water-wheel an upward curvature fromcenter to circumference7 for the purposes substantially as herein setforth.

2. The peculiar shape and position ot' the series of buckets within thewheel-viz the convex surface of each bucket having the shape of thesegment of a circle Whose radius is one-third longer than the radius ofthe wheel, whilethe said buckets are so arranged that the convex surfaceof each bucket is tangential to an imaginary circle whose center is thecenter of the wheel and whose radius is one-third. the length of theradius of the wheel, substantially as herein set forth.

.3. Connecting the lower edges of the buckets to each other by means ofa scallop-edged rimf of such a shape that the water Wiil be conductedfrom the scroll-shaped water-Way directly against the central portion ofthe convex surfaces of each bucket and then pass freely downward betweenthe buckets, substantially as herein set forth.

The above specification of my improvements in water-wheels signed andwitnessed this 20th day of May, A. D. 1856.

JOHN TYLER.

Witnesses:

DANIEL HINKLY, DANIEL RICHARDSON.

